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Westiellopsis

Generic name: WESTIELLOPSIS Janet, 1941. Ann. Bot. London, ser. 2, 5: 170.
Synonyms:
Diagnosis:
Type species: Westiellopsis prolifica Janet 1941. - Two little known species.
Descriptions:
Komárek (1992): Filamentous - thallous; filaments intensely true-branched, composed from primary thicker, more or less creeping, torulous, uni-, two or polyseriate trichomes and secondary lateral ones, generally thinner and growing in erect uniseriate branches (T-type of branching) without visible sheaths. Trichomes intensely constricted at cross walls, only young branches sometimes consist in some segments of long, cylindrical cells, without constrictions at cross walls; branches not attenuated towards the ends; at the ends of secondary branches dilated terminal portions (chains of more or less rounded cells) with short, wide cells, intensely constricted
at cross walls, occasionally two-seriate (after lengthwise division), called "pseudohormocysts" by original author; "pseudohormocysts" probably with narrow sheaths. Cells in old trichomes barrel-shaped, isodiametric or slightly shorter or longer than wide. Heterocytes oblong-cylindrical, intercalar, solitary, cylindrical, of different length. Akinetes develop solitary, in old parts od trichomes.
Genotype differences, molecular data:
Reproduction strategies, life cycles, cell division:
Komárek (1992): Cells divide in different planes in old trichomes, and mainly crosswise in branches. Reproduction by solitary monocytes (planocytes ?), which liberate from "pseudohormocysts", and from old, torulous trichomes and branches.
Ultrastructure:
Taxonomic position, higher hierarchy:
Cyanophyceae, Stigonematales, Fischerellaceae
Notes to taxonomy, misinterpretations:
Ecology, ecophysiology, ecological significance:
Komárek (1992): The type species isolated from garden soil samples, India (Madras).
Physiology and biochemistry:
Distribution, endemism, problematic citations:
Reference strain:
Infrageneric scheme, species concept:
List of species:
Westiellopsis prolifica Janet 1941
Keys:
List of stains:
Drawings:
Komárek 1992
Application technology:
Literature:

  2.1 taxonomy: Janet 1941, Desikachary 1959, Bourrelly 1970, Komárek 1992
  2.2 cytomorphology:
  2.3 16S rRNA sequencing:
  2.4 biology and life cycles:
  2.5 ecology: